Method _checkForMissingMandatoryOptions

lib/command.js:1687–1699

* Display an error message if a mandatory option does not have a value. * Called after checking for help flags in leaf subcommand. * * @private

()

   */

  _checkForMissingMandatoryOptions() {
    // Walk up hierarchy so can call in subcommand after checking for displaying help.
    this._getCommandAndAncestors().forEach((cmd) => {
      cmd.options.forEach((anOption) => {
        if (
          anOption.mandatory &&
          cmd.getOptionValue(anOption.attributeName()) === undefined
        ) {
          cmd.missingMandatoryOptionValue(anOption);
        }
      });
    });
  }

  /**
   * Display an error message if conflicting options are used together in this.